Ford is adding an extra 25,000 miles to its warranty coverage on both its new and refurbished petrol powertrains and transmissions as part of sweeping reforms to its service structure in North America. The warranty coverage now lasts for three years or up to 100,000 miles where previously it was only three years or 75,000 miles.

The new warranty covers any petrol engine or transmission sold after the first of April and applies when the sale is made by a Ford dealership or factory-authorized distributor – not when the covered parts are installed in a vehicle. New assemblies must also be registered with Ford in order to obtain full coverage.

Ford has also confirmed that prices for the service engines and transmissions are unchanged even with the improved warranty coverage, reports WardsAuto.

The new extension does not cover diesel engines either sold new or as service units. The diesel-engine warranty remains at two years, with unlimited mileage.